Churn.



PATBNTED APR. 1o, 1906.

J.. L. FORBES.

GHURN.

APPLIUATION FILED JULYza. 1905.

3 SHEETS-SHEET l.

Jmfy Inventor@ Attnys PATENTED APR. l0

J. L. FORBES.

CHURN.

APPLIOATION FILED JULYzs, 1905.

3 SHEETS-SHEET 2.

Inventor Attorneys PATENTED APR. 10, 1906.

J. L. FORBES.

CHURN.

APPLIOATION FILED JULY 2s. 1905.

HBETS-SHEET 3,

d@ n vent-l2 Attorneys IV O , ward UNITED STATES PATENT OFFICE.

Specification of 4Letters Patent.

Patented .April 10, 1906.

Application filed July 28, 1905. Serial No. 271,677.

.To all whom it may concern:

Be it known that I, JAMES L. FORBES, a citizenof the United States,residing at Fine pple, in the county of Wilcox and State of abama, haveinvented a new and useful Churn, of which the following is aspecification. V v This invention' relates to improvements in churns,and has for its object to improve the construction' 'and increase theeiiiciency of devices of this character.

` With these and otherv objects in view, which will appear as the natureof the invention is better understood, the same consists in certainnovel features of construction, as hereinafter fully described andclaimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designating characters,is illustrated the referred form of embodiment of the inventlon capableof ca ing the' same into practical operation, it being understood thatthe invention is not necessarily limited thereto, as' various changes inthe shape, proportions, and general assemblage of the parts may beresorted to without departing from the principle of the invention orsacricmg any of lts advantages.

In the drawings thus em loyed, Figure 1 is a sectional elevation of t eInproved device, illustrating one mannerof arranging the same. Fig. I2is a erspectivey view, inverted, of the closure of tlie cream-receptacleas em loyed in the construction shown in Fi 1i ig. 3 is a (perspectiveview, inverted, o the improved asher member. Fig.' 4 1s a view similarto Fig. 1, illustrating another form of the dasher-operating mechanism.Fig. 5 is a view similar to Fig. 4, illustrating another modification inthe construction..v Fi s. 6 and 7 are enlarged sectional details o themodified construction shown in Fig. 5. Fig. 84 is a sectional viewillustrating another modified construction of the device.`

In operating the improved device a receptacle10 for the milk from whichthe butter particles are to be separated is employed, and thisreceptacle may be of any suitable material and of any size or ca acity,but will preferably be of the barrel Vform and provided with adetachable closure 11, the latter with a central aperture 12 for thedasher-rod and provided with oppositely-disposed iny-extending stop-lugs13, as shown more clearly in Fig. 2, when one form of the operatingmechanism isemployed.

The dasher member (represented as a whole at 14) is in the form of ahollow drum opening downwardly and with a rod 15 eX- tending therefromthrough the aperture 12 in the closure 11. The side wall of the dashermember is pierced at intervals with lateral apertures 16, and the lowerrim of the same is' curved to conform to the apertures, so that thelower surface ofthe dasher is formed into a lurality. of small curvedsections 17 beneat the lateral apertures. The dasher is of wood and withrelatively thick walls to provide correspondingly large bearingsurfacesto the curved portions, and thus increase the effectiveness of theaction, as hereinafter explained. Extending upwardly into the rod 15 isa cavity 18, communicating at one end with the interior of the dasherand having aI lateral branch 19 at the other end leading through theside of the rod. The dasher rod 15 is provided Iwith a screwthread bymeans of which the latter, together with the dasher 14, connectedthereto, may be rapidly rotated back and forth at the same time' thatitis moved vertically inthe receptacle, and this screw-thread may beexteriorly of the rod, as at 20 in Fig. l1 or as at 25 within a cavity26 in the rod, as in Fig. 4. The threads are preferably in double formor extended to-insure greater longitudinal movement.

When the exterior threads 20 are 4emplolyed upon the rod 15, as in' Fig.1, they wil be engaged b the stops 13, so that when the rod is movedongitudlnally of thecreamreceptacle it will be rotated by the actionofthe stationary stops .upon its screw-threads, as will be obvious.

Transverse spaced stop-pins 21 22 are disposed .in the free end oftherod 15, andslidably disposed upon the rod is a sleeve 23, the

latter having an internal screw-thread 24, engaging the stop-pms. Bythis arrangement 1t is obvious that when the sleeve 23 is moved in onedirection the rod 15 and its attached dasher will be ra idly rotated`and moved longitudinally of t e rece ta-cle 10 in one direction, andthen when t e sleeve is moved in 'the op osite direction the rotativeand longitudina movements will be reversed. Thus alternate reciprocaland rotary motion will be im ar'ted to the dasher member and a mosttlhorou h and effective action produced upon the m' k.

When the dasher is moved upwardly and downwardly and rotated in oppositedirec- IOO 2 einem air, the importance of this aerating feature of theinvention is apparent, and the simplicity and thoroughness with whichthis is accomplished in the present invention is a very im ortant andvaluable feature ofthe same.

the form of the construction shown in Fig. 4, with the threadsinteriorly of the rod 15, a stationary rod 27 is supported, as by abracket 28, from a stationary structure, such las a wall 29, andprovided with lateral pins 30 in its lower end for en aging the thread25 in the same manner and or the same urpose as the stops 13 on thecover 11 in t e construction shown in Figs. 1 and 2, as will be obvious.yWhen the -construction shown in Fig. 4 is employed', the sleeve 23 androd 27 ma be removed, leaving the dasher-rod and dasher member to beoperated manually, if required, which may be convenient under somecircumstances.

The threads 20 or 25 may be attached to the rod 15 in any requiredmanner or formed integral therewith, as preferred.

The dasher may be employed to take up the butter after the churningaction is completed, as will be obvious.

The parts are easily separable for thorough cleansing and may beinexpensively manufactured and of any required material or of any size,so that the improved devices may be em loyed upon churns of any caacity.

In t e modiiications shown in igs. 5, 6, and 7 the dasher-rod l5 isformed hollow from a oint above the cavit 18 and a sheetmetal lining orshell inserte therein, as re resented at 31, the shell being closed at te lower end, as at 32, so that any lubricating material which may beinserted into the shell will not pass into the churn-body. Disposedtransversely of the shell 31 near the top are pins 33 34, spaced apartvertically and connected by a vertical portion 35, the two pins servingthe same purpose as the spaced pins 21 22 in the structures shown,respectively,in Figs. 1 and 4. Disposed within the shell 31 are two`tubular members 36 37, one Within theother and provided withreverselydisposed spiral grooves 38 39, the' ins 33 34 extending throughboth the spira grooves, as shown. Attached ri idly to the outer tubularmember 36 is a and-gripmember 40, and connected into the upper end ofthe tubular member 37 is-a rod 41, the latter extended upwardly andconnected, as by brackets 42, to a stationary support, such as a wall at43, the rod 41 and brac ets 42 being similar to and performing the samefunctions as the rod 27 and brackets 28 in the modified structure shownin Fig. 4. The operationof the modified structure shown in Figs. 5, 6, 1

and 7 is substantially the same as that shown in Fig. 4, as will beobvious.

In Fig. 8 another modified construction is shown consisting of a rod 44,coupled, as at 45, to the dasher-rod 15 and extending upwardly through abracket 46, the latter secured to a stationary support, such as a Wall47. Mounted for rotation in the bracket 46 is a cable-drum 48, dividedby a central iiange i 49 into two arts and with the rod 44 passingcentrall t ough the drum. Extending above t e drum 48 and also above theupper member of the bracket 46 is a split sleeve 50, ta ered externallyand also threaded externallly and provided with a nut 51. By this sim lemeans the dasher-rod may be clamped to t e drum at any desired oint bysimply setting the nut 51 upon the s eeve 50. Cords 52 53 are connectedreversely to the two partsy of the drum 48, so that by alternatelydrawing u on the same the dasher-shaft may be rotate alternately fromleft to right-and from right to left, the extent of the movement beingcontrolled by the lengths .of the cords and the sizes of the drums.

Having1 thus described the invention, what is claime is- 1. Achurn-dasher having a hollow interior opening downwardly and with spacedapertures leading laterally through the side Walls, the combined area ofthe apertures being greater than the internal area of the dasher member,a hollow rod extending from said dasher member and communicatin withsaid hollow interior, and means forsimu taneously rotating said dashermember and moving the same longitudinally of the body of the milk,Whereb apartial vacuum is produced Within the olloW dasher and aquantity of air forced through the milk at each stroke of the dasher.

2. In a churn, a downwardly-opening hollow dasher having spacedapertures through its side walls, a dasher-rod connected to said dasherand provided with a longitudinal recess communicating with the same andterminating in a lateral branch leading therefrom, and means forsimultaneously reciprocating and reversely rotating said dasher and itsconnected dasher-rod.

' 3. In a churn, a hollow churn-dasher opening downwardly and having saced lateral apertures through its side wa ls, a hollow stem connectedto said dasher and communicating with the interior of thesame andprovided with an internally-threaded longiy provided with an internalscrew-thread for engaging said transverse stop-pins, and a rod havingmeans for supportin in stationary position and provided with Iateralpins for 5 engaging the internal thread of said dasher- 4. In a churn, ahollow dasher o ening downwardly and having s aoed latera ,aperturesthrough its side wa 1s, a hollow stem 1o connected to said dasher andcommunicating With the interior ofthe same and provided with a threadedportion, a threaded sleeve slidably engaging said rod, and 1ateral1y-extending stopins for engagement by said threaded mem ers.

In testimony `that I claim the foregoing as my own I have hereto alixedmy signature in the presence of two witnesses.

. JAMES L. FORBES. Witnesses:

J. N. STANFORD, J. J. Coon.

